Lately I am very unmotivated about the creation of my Tulpa, this plus my social isolation and the excess of responsibilities just depressing me, which causes my hope in my Tulpa diminishes. Not to mention that for a few days, I do not feel my Tulpa ...
She already has a partial consciousness, but what I want most now is to see her, touch her, feel her.

If you're relying on short bursts of motivation alone it's no wonder that you're burnt out. I can't speak about your other issues, but if you want to see progress, allot some of your free time for dedicated forcing sessions (a reasonable 1-2 hour chunk) and endure that for the full length of time. Avoid distractions and, if you find that your mind only focusing on the things that are bringing you down, shift your mind back to your tulpa and continue to interact with it. Motivation might fuel you here and there, but no amount of comforting words from anyone here on these forums will match discipline.